Pump-governor



(No Model.)

A.'J.SAXE. PUMP GOVERNOR.

No. 503,776. l Y Patented Aug. 22,1893.

Unai-ran STATES PATENT ALFRED SAXE, OF CHICAGO, ILLINOIS.

PUMP-GOVERNOR.

SPECIFICATION forming part of Letters Patent No. 503,776, dated August' 22, 1893- Application liled February 10,1893. Serial No. 461,766. (No model.)

To @ZZ whom it mrtg/concern.-

Be it 'known that I, ALFRED' J. SAXE, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain'new and useful Improvements in Pump-Governors, and I do declare the following to be a full, clear, and eX- act description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked Athereon, which form a part of this specificaion.

My invention relates to pump governors or regulators and has for its object the construction of a simple and thoroughly reliable automatic regulator for steam pumps.

The invention consists of the use of a nurnber of hollow expansible diaphragms in communication with the pressure tank and forming an integral part of the valve stem so that by their expansion and contraction under the varying pressure in thetank, the stem will be lengthened and shortened, and the valve in the steam pipe closed and opened.

Figure l is a vertical section of the entire device. Fig. 2 is a cross section of the valve and its seat upon the line 2, 2, of Fig. 1. Fig. 3 is a plan section on the line 3, 3, of Fig. l. Fig. 4 is a plan section of the case for inclosing the diaphragms, taken on the line 4, 4, of Fig. 1. Fig. 5 is a vertical section on the line 5, 5, of Fig. 4.

I show at A, a continuation of the steam pipe entering the globe or chamber a, and being vertically apertured soas to afford a seat for the piston valve B, which is adapted to reciprocate within this aperture. The valve B, is provided with two series of vertical ports b, within its walls, one series being adapted to open within the chamber a, above the pipe A, and the other below the said pipe-the two series being so disposed that the dropping of the piston closes communication between the pipe and the chamber simultaneously as to each side. If the valve B, is hollow, as shown, its chamber should be divided by a transverse partition for the reason that the upper series of ports are open to the pipe A, and the lower series to the chamber a, when the valve is closed.

A yoke or frame C, is mounted upon the top of the globe for the purpose of supporting the outer mechanism of the devlce. A rigid valve stem D, extends through a stuing box c, `in the upper wall of the globe, and is rigidly fixed to a block d. The valve stem is continued upwardly by mea-ns of a tube D', rigidly fixed to the block d. The upper end of the valve stemconsists of a number of hollow diaphragms as l, 2, 3, and 4, the lower one of which is centrally attached to the tube D. The several diaphragms are connected by short nipples h, and the upper one 1s provided with a nipple H, which is tightly secured into a cap e, mounted upon the upper end of a case or cylinder E, which incloses the diaphragms and which is carried by the yoke C. The nipple H, enters a duct in the c apc, which leads to a pipe G, which in turn is 1n communication with the pressure tank.

A spiral spring F, is placed upon the tube D', and interposed between the lower'diaphragm 4, and the top of the yoke C. The tension of this spring is adjusted by means of an externally screw threaded sleeve'c, encircling the tube D', and fitting within the aperture in the upper end of the yoke C, through which the tube passes. A washerf, is preferably interposed between the top of the spring F, and the diaphragm 4. lThe lower end ofthe sleeve c', is provided with a square or heXagon head for the engagement of a wrench.

At d', is shown a drain cock entering the side of the block d, and communicating with the tube D.

For convenience in adjusting the valve to its seat as well as in making repairs, it is desirable that the upper wall of the globe or chamber a, should be in the form of a cap as shown at a', held to its place by means of ICO return to 'their normal shape, and the valve is thereby again opened. It isobviousl that the sensitiveness of the device willV vary with the thickness of the walls of the diaphragmsthe greater their rigidity the greater-"Willbe c. Sediment may be washed out of the d'i'a-` I phragms by the drain cock d.` "While I show four diaphragmsit is obvious that the number may be varied' at pleasure. These diaphragms may be constructed in any? desired manner. I prefer to form them of a pairof lianged disks of such relative size'thatthe ange of one Wilfl't snugly within that of the other.A .The-two disks are. soldered together.

2.- The combination with a.` steam pu-mphavingfagregulatin g-valve adapted to be closed by the lengthening and opened by the shortening of its stern, of a series of hollow expansi- Hbl'e"'di'ap'hragrns forming a.V part ofv the valve stem and rigidly united by tubular connections, theremoterendof the valve stem being rigidlyxed and being tubular and connecting'theremotest diaphragm with the pressure 'tari'k; substantially as Vdescribed and for the Apurpose specified.

l3. The combination with a steam pumphavn'ing a regulating valve adapted' to be closed Sand' opened? by" the longitudinal expansion and contraction of its stem and with a series of hollow, rigidly united-4 and internally connected expansiblediaphragms forming apart of thevalvestem; andbeing in. communica- 1t 1s desirablethat the disks` barlfnll'larl, crimped as shown in Fig. 5, so asitorallow et their free expansion. The tubes enteringthese diaphragme have theirends inserted within central; apertures. may be used to:l make. a close joint.

I claim as myinventionf- 1. The combi-nation withlargoverningvalve of a. steam pump, of a valve stem; having its ouater endrigid-1y fixed` andbeingadaptedto actuate the valve; byy itst expansionand con: traction,r a series ofrilnternallfy eonneetedhol.- low exzpansible diaphragfms forming an inte gral partei the stem and-in position trans verse ltoi its length, andmeans of communica tion between the pressure te beregnlatedand i the diaphragm.chambers-wherebythefaction 'ALFRED J' SAXE' of thevalveisvaried with thevariationsof 2 thev pressure, substantially as described,a and Q forthe purpose specified.

If desired., solder. e

tion with.k the pressure tan; 0f an. adjustable spring tending to resist theAV expanslon. ot?l the j diaphragme, substantially as dnsaribed andA l"for thefpuirpose spepcinedl. v Y

` 4, Thezcolmbinationwitlra;reguilatingvalve i? of assteamfpuimpiofga hollow, valyeestemvhavingitschambe-r in G Ommnnication. with the 'pre'.ssure tank and, being., adaptedrby its 1011- git-udinal expansion to,y control the` ualvmand a, drain cook leading from the valvestem chamber whereby the pressure in the tank l may be. utilizedto cleansesaidchambensno tantally described.

In testimony whereof I aiiixmy. signature in presence of twdwitnesses.

Witnesses: H. L. WING, 5 L. K. Gl-LLSON. 

